Wrench.



E. H. GOT'SHALL.

WRENCH.

APPLICATION FILED SEPT.15, 1909.

956,074. Patented Apr 26, 1910.

[UNITED sTATEs PATENT orrrcn.

EDDIE H. GOTSHALL, 0F BLOOMINGDALE, OHIO.

WRENCH.

To all whom it may concern:

Be it known that I, Eomr. H. GOTSHALL, a citizen of the United States,residing at Bloomingdale, in the county of Jefferson, State of Ohio,have invented certain new and useful Improvements in Trenches; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This invention relates to improvements in wrenches and more particularlyto thesliding jaw type.

It has for its object the provision of a device of that kind which maybe readily adjusted to the diameter of the object to be gripped.

Another object is the provision of a means for holding the movable jawagainst movement after the latter has been adjusted on the object to begripped.

A further object is the provision of a means for releasing the catch onthe movable jaw, whereby the latter may be moved from engagement withthe gripped obj eet.

l/Vith these and other objectsin view as will more fully hereinafterappear, the present invention consists in certain novel details ofconstruction and arrangement of parts, hereinafter fully described,illustrated in the accompanying drawings and more particularly pointedout in the appended claim.

It is to be understood that various changes in the form, proportion,size and minor details of the device may be made without departing fromthe spirit or sacrificing any of the advantages of the invention.

In the accompanying drawings forming part of the specification:Figure 1is a side elevation of the device. Fig. 2 is a sectional plan view onthe line 2-42 of Fig. 1. Fig. 3 is a longitudinal sectional view of thedevice.

Similar numerals of reference are employed to designate correspondingparts throughout.

As shown, the device consists of a movable and fixed jaw. The shank ofthe stationary jaw is designated by the numeral 5 and terminates at oneend in a handle 6, while at its opposite end the stationary jaw head 7is formed. The latter may be of any well known structure and is providedwith a flat gripping surface. The shank 5 is rec- Patented Apr. 26,1910. Serial No. 517,876.

tangular in cross section and on its opposite longitudinal sides isprovided with a plurality of spaced teeth 8 and 9 arranged in staggeredrelation which extend from the handle (3 to a point adjacent thegripping face of the jaw 7.

The sliding or movable jaw is designated by the numeral 10 andcorresponds in length and width to the stationary jaw 7. The movable jawis provided adjacent one end with a recess which receives the shank 5,the opening being of an area to permit the jaw to slide on the shank.The opposite end of the jaw extends to a point in alinement with theengaging end of the stationary jaw 7 and its inner face is flattened toprovide a flat gripping surface corresponding to the gripping surface ofthe jaw 7. Extending from the opposite sides of the sliding jaw 10 anddirected toward the handle (3 are a pair of guide plates 11. Thesemembers are somewhat less in width than the width of the shank 5 'andextend parallel with and bear on the opposite flat faces of the latter.The guide plates 11 terminate in a rectangular shaped sleeve 12 whichencircles the shank and is of a size to slide over the teeth 8 and 9.\Vith this construction it is obvious that the movable jaw may he slidto opposite ends of the shank and adjusted to the diameter of the objectto be gripped.

In order that the movable jaw may be held in any of its adjustedpositions on the shank 5, the following construction is employed z-Byreferring 110w to Figs. 1 and 2 it will be seen that a pair of pawls l3and 14 are provided. These members extend in advance of that side of themovable jaw remote from the gripping surface and are adapted to engagewith the teeth 8 and 9 of the shank, thus preventing movement of themovable jaw in one direction. The pawl 14: is located between theengaging end of the movable jaw and shank 5 and has its inner endpivoted in a recess formed in that side of the movable jaw remote fromthe gripping surface. The pawl is of sufficient length to engage theteeth when its engaging end is moved toward the shank 5. The oppositepawl 13 has at its inner end a pair of cars 15 and 16, which straddlethe movable jaw 10. Said pawl 13 is pivotally connected to said movablejaw by'a pivot bolt 17, which extends through the said cars 15 and 16,and the said movable jaw. Connection between ,end is provided with anelongated slot or opening 20 which receives a pin 22 extend inglaterally from the guide plate 11. The

links 18 and 19 are so positioned that their inner or free ends will liein the same plane, the inner end of the link 18 being arranged nearer tothe movable jaw 10 than the opposite link 19. By referring now to Fig. 1it will be seen that projecting inwardly from one side of the recess 20in each of the links are a pair of leaf springs 21. These members arearranged in spaced relation and are embedded in the side wall of therecess and are of a length to engage with the pin 22 when the link ismoved so as to bring the pin to either end of the recess. The length ofthe slots 20 corresponds to the distance each pawl will move in order tobe brought into and out of engagement with the teeth. Thus it will beseen that when the link 19 is moved so as to bring that end of therecess adjacent its secured end to bear on the pin 22 the free end ofthe pawl will be moved into engagement with the teeth 9 and will beyieldingly heldin such engagement by the spring 21 bearing on the pin22. When the link is moved in the opposite direction the pawl will bemoved from engagement with the teeth and will be held in this positionby the spring in the opposite end of the recess.

Owing to the staggered relation of the teeth it will be seen that thejaws may be adjusted to accommodate the various diameters of bolts, orother objects to be gripped and may be more accurately adjusted to thevarious sizes of nuts and similar objects than if the teeth werearranged directly opposite each other.

Thus it will be seen that I have provided a device which is exceedinglysimple in structure and comparatively inexpensive to manufacture,embodying few parts and these so arranged that the danger of derangementwill be small.

Having thus described my invention what is claimed asnew, is v V Awrench comprising a fixed jaw member having a shank provided withoppositely disposed teeth arranged in staggered relation, a sliding jawmember disposed on said shank, a pair of pivoted pawls carried bysaid-slidingjaw member, laterally extending pins arranged on saidsliding jaw member, links having their outer ends secured to said pawlsand their inner ends provided with recesses for the reception of saidpins and leaf springs disposed in said recesses and adapted to engagesaid pins and serving to hold the pawls in and out of engagement withsaid teeth.

In testimony whereof, I aflix my signa-.

ture, in presence of two witnesses.

EDDIE H. GOTSHA'LL;

Witnesses:

GHAs. P. BRoBs'roN, SAMUEL VORHES.

